纳米金粒子沉积在TiO2表面制得具有表面等离子体共振效应(SPR)的Au/TiO2,是目前提高TiO2光催化剂对太阳能的利用率和量子效率的重要途径之一,本文以氯金酸(HAuCl4·3H2O)和P25型纳米TiO2为原料,采用紫外可见分光光度计探讨了温度对化学还原制备金溶胶的SPR的影响; 并以紫外漫反射进行表征.比较了化学还原热沉积法、化学还原光沉积法和光还原沉积法制得Au/TiO2的SPR差异,结果表明,光还原沉积法是一种高效、经济且环境友好型制备较强SPR的Au/TiO2的方法.
The deposition of nano-gold particles on TiO2 to produce Au/TiO2 with surface plasmon resonance effect(SPR)is one of the important ways to improve the usage and quantum efficiency of TiO2 photocatalyst for solar energy. In this paper, HAuCl4·3H2O and P25 nano-TiO2 as raw materials, the effect of chemical reduction temperature on the SPR of gold sol was studied by UV-vis spectrophotometer; and the SPR difference of Au/TiO2 prepared by chemical reduction thermal deposition method, chemical reduction photodeposition method and photoreduction deposition method were characterized by UV diffuse reflection. The results show that photoreduction deposition is an efficient, economical and environmentally friendly method for the preparation of high SPR Au/TiO2.
[1] 陈顺生,曹鑫,陈春卉, 等.TiO2基复合光催化剂研究进展[J]. 功能材料,2018,(49)7:07039-07049.
[2] 冯春波,杜志平,赵永红,等. Au改性纳米TiO2材料对 NPE-10 光催化降解的活性[J]. 物理化学学报,2006,22(8):953-957.
[3] 王超,敬和民. 铁掺杂二氧化钛光催化性能研究[J]. 化工时刊, 2018,32(8):4-7.DOI: 10.16597/j.cnki.issn.1002-154x.2018.08.002.
[4] 崔玉民,白翠冰,苗慧,等. 石墨相氮化碳与半导体光催化剂复合研究进展[J]. 水处理技术,2018,44(9):1-6.DOI: 10.13796/j.cnki.1000-3770.2018.09.001.
[5] 施海波,王騊,王晟. 紫外光还原法制备Cu2O/TiO2及其光催化性能[J]. 浙江理工大学学报,2015,33(3):188-192.
[6] 高溢,刘佳雯,李中华. Au/TiO2纳米光催化剂的制备及光催化性能研究[J]. 化学工程师,2016,30(2):1-3.DOI: 10.16247/j.cnki.23-1171/tq.20160201.
[7] 郑改革,赖敏,徐林华,等. 金-二氧化钛(Au-TiO2)复合薄膜的制备及局域表面等离子体共振(LSPR)效应[J]. 大学物理实验,2012,25(2):1-3.DOI: 10.14139/j.cnki.cn22-1228.2012.02.001.
[8] 张靖峰. 纳米ZnO复合物的制备及其光催化降解NPE-10研究[D]. 太原:中国日用化学工业研究院,2007.
[9] CHAKRABORTY S, ANSAR S M, STROND J M, et al. Comparision of colloidal versus supported gold nanoparticle catalysis[J]. J Phys Chem C, 2018, 122: 7749-7758.
[10] WENDERICH K, MUL G. Methods,mechanism,and applications of photodeposition in photocatalysis: A review[J]. Chemical Reviews, 2016, 116(23): 14587-14619. DOI:10.1021/acs.chemrev.6b00327.
[11] TANAKA A, HASHIMOTO K J, KOMINAMI H. A very simple method for the preparation of Au/TiO2 Plasmonic photocatalysts working under irradiation of visible light in the range of 600-700nm[J]. Chemical Communion, 2017, 35(53): 4759-4762. DOI:101039/c7cc01444a.
[12] 王杰祥,张正富,赵恩格,等. Au核@Pt壳纳米粒子的光化学还原法合成及表征[J]. 稀有金属, 2015,38(3):527-533.DOI: 10.13373/j.cnki.cjrm.2014.03.026.
[13] SPURR R A, MYERS H. Quantitative analysis of anatase-rutile mixtures with an X-ray diffractometer[J]. Analytical Chemistry, 1957, 29(5): 760-762.
[14] MA Z L, QIAO Y J, WEN Y J, et al. Effect of precursors on the anti-corrosion property of silica encapsulated waterborne aluminium pigments[J]. Pigment & Resin Technology, 2017, 46(2): 100-106. DOI:org/10.1108/PRT-02-2016-0017.
[15] RAUT S S, ADPA S K, JAMBHALE A, et al. Enhanced photocatalytic activity of magnetic BaFe12O19 nano-platelets than TiO2 with emphasis on reaction kinetics, mechanism and reusability[J]. Industrial & Engineering Chemistry Research, 2018, 57: 16192-16200.
[16] 王澍. 金溶胶合成过程中的物理化学基本问题研究[D]. 合肥:中国科学技术大学,2009.
[17] DANIEL M C, ASTRUC D. Gold nanoparticles:Assembly, supramolecular chemictry, quantum-size-related properties, and applications toward biology, catalysis, and nanotechnology[J]. Chemical Reviews, 2004, 104(1): 293-346.
[18] 叶春洁,赵玉云,陈嵘,等.金纳米粒子与蛋白质的相互作用及其应用[J]. 中国科学:化学,2012,42(12):1672-1682.DOI: 10.1360/032072-393.
[19] DINKEL R, JAKOBI J, ZIEFUß A R, et al. Role of citrate and NaBr at the surface of colloidal gold nanoparticles during functionalization[J]. J Phys Chem C, 2018, 122, 27383-27391. DOI:10.1021/acs.jpcc.8b07897.
[20] QIAN K,SWEENY B C, JOHNSTON-PECK A C, et al. Surface plasmon-driven water reduction:Gold nanoparticle size matters[J]. J Am Chem Soc, 2014, 136: 9842-9845. DOI:org/10.1021/ja504097v.
[21] 孙秀兰,赵晓联,汤坚. 纳米金溶胶形成过程的可见光吸收光谱研究[J]. 无锡轻工大学学报,2004,23(4):86-89.
[22] 刘阳,王晟,王騊,等.紫外光原位还原法制备Pt/TiO2及其光催化性能研究[J]. 浙江理工大学学报,2010,27(1):18-21.
